Rolling-machine for forming lips on treads, &amp;c.



PATENTED J NE- 2-, 19 03..

G. P. HUTOHINS. ROLLING MACHINE, FOR FORMING LIPS 0N TREADS, 8w.

APPLIOATION'I'ILBD JULY: 19, 1902.

UNITED STATES:

Patented June 2 1903.

PATENT OFFICE.

GEORGE F. HUTOHINS, OF VOROESTER, MASSACHUSETTS, ASSIGNOR TO UNI- VERSAL SAFETY TREAD COMPANY, OF JERSEY CITY, NEW JERSEY, AND PROVIDENCE, RHODE ISLAND, A CORPORATION,OF NEW JERSEY.

ROLLING-MACHINE FOR FORMING L IPS ON TR EADS, 80C

SPECIFICATION forming art of Letters Patent No. 730,019, dated June 2, 1 903 Application filed Jul 19,1902. Serial No. 116,229. a. model.) 5

To all whom it may concern.-

Be it known that I, GEORGE F. HUTOHINS, a citizen of the United States, residing at Vorcester, in the county of WV orcester and 5 State of Massachusetts, have invented certain new and useful'lmprovements in Rollin -Machines "for Forming Lips on Treads, dtc. of which the following is a specification, referencebeing had therein to the accompanying IO drawings.

The object'of my invention is to produce a machine through which non-slipping orsafety treadsuch, for example, as that described in United States Letters Patent No. 638,666, of 1.5 December 5,1899-(01' other suitablematerial) may be passed and during the passage guided properly so as to form a curved lip or nosing along one margin of the sheet-metal portion of thetread, the nosing being parallel with the ribs and projecting in the opposite direction from the ribs. 7

Figure 1 is a side elevation of one form of machine embodying my present invention. Fig. 2 is a side elevation, partly in section, of the tread-guiding and lip-bending rolls. This view also shows the gearing of the rolls in side elevation. Fig.3 is a cross-sectional View at line 3 3 of Fig. 1. Fig. 4 is an edge view of a section of a so-called safety tread provided with a curved lip or nosing at one margin.

In the drawings illustrating my invention, A and B are two rolls" mounted in suitable supports A A and drivengin any suitable 5 manner-for example, by gearings such as shownand the arrangement and mode of operation of which will be readily understood by all mechanics without particular descrip tion. One of the rolls, asA, is formed with 0' alternating circumferential ribs a and grooves a. Roll B is a plain-surfaced roll and coopcrates with roll A. The purpose of the ribs (1 is to enter the groovesof the material passed through the machine and the purpose of the 5 grooves a is to receive the ribs which alternate with the grooves in said material.

In Fig. 4, 00 represents the ribs of the material passed through the machine, and a represents the grooves of said material. It is plain, therefore, that when the material is passed through the machine between the rolls A and B the sheet material will be held and guided by the cooperation of the rolls and by the cooperation of the ribs a and grooves Cb with the ribs :0 and grooves 00. Roll B is a plain-surfaced roll. One end portion of roll A is formed with a concave circumferential shoulder (R, the wall surface whereof curves upwardly and outwardly, so that the greater portion of the shoulder projects beyond the surfaces of the ribs a. Shoulder a runs into the enlarged end portion a of roll A, the surface of which is" parallel with the lengthwise axis of roll A. Shoulder a overhangs the rounded end portion 1) of roll B and when 6 5 the material is passed between the rolls a free margin of the sheet-metal portion of the work is curved downwardly between the opposed concave wall or shoulder a and the convex or rounded end portion 1) of roll B, so that the nosing or lip 00 is formed. Roll 13 outwardly from convex shoulder 12 is preferably formed with a circumferential shoulder 1), which is opposite the shoulder a If desired and the margin of the sheet material is wide enough, that margin may be formed with a nosing which will run into a straight portion of the margin and will pass between the shoulders a and b.

When the materialis passed between the rolls, it has a tendency to curl downwardly, and to overcome this I prefer to provide the machine with a roll D, mounted in bracketarms cl and holding roll D parallel with roll B, so that the under surface of the stock as l gated openings cl, through which-fasteners d pass into the inclined support (Z for said bar D. By this construction the barD may be slid edgewise on the support dithereby car= rying the roll D upwardly or downwardly in relation to the roll B. Some stock is liable to 16 curl more than others, and it is particularly desirable that the roll I) should be adjustable, as stated.

The support (1 is formed with a lateral base portion. (1, which is clamped or otherwise suitably sccu red on the beds (Z of the machine. From the forward ed ge of support (7 there are upturned projections (1, through which adj Listing-screws (F are passed, the lower ends of the adjlisting-screws impinging against the bed (Z so that by loosening the fasteners (Z of the base and adjusting the screws (Z a further adjustment of roll D in relation to roll I3 is obtained, as will be plain from the drawings without more particular description.

The rolls are made movable one toward the other, so that the extent of the overhang of shoulder (L2 over the rounded end portion 1) may be increased or diminished to form lips of different widths. To this end roll A is mounted in suitable adjustable boxes f in frame-pieces A A, separated by sprin f or in anj other suit-able manner, the adjustment being made by turning screws f \Vhat I claim is- 1. In a rolling-machine for forming lips on treads, the combination of a plain-surfaced under roll; an alternately ribbed and grooved upper roll; intermeshing gears on said rolls; means for supporting said rolls; and a drivin g-gearon the lower roll; the upper roll having a concave wall (6 and the under rollhaving an opposed convex wall, substantially as dcseribed.

In a rolling-machine for forming lips on treads, the combination of a rollllaving alternating ribs and grooves and a concave wall at one end; a coiiperating roll having a smooth surface and a convex surface at one end, opposed to the concave surface of. the other roll; means for supporting said rolls; means for driving them simultaneously; a roll, I), and means for supporting roll I) in operative relation tothe other rolls.

In a rolling-machinc for forl'ning lips on treads, the combination of a roll having alternating ribs and grooves and a concave wall at one end; a co(')perating roll having a smooth surface and a convex surface at one end, opposed to the concave surface of the other roll; means for supporting said rolls; means for driving them simultaneously a roll,D; means for supporting roll D in operative relation to the other rolls; and means for moving the roll D toward and from'said other rolls.

In testimony whereof I affix my signature in presence of two witnesses.

GEORGE F. I'I'UICIIINS.

\Vitnesses:

EDWARD BEACH, M. E. COVENEY. 

